Gas Station Fuel Nozzles are Fascinating Contraptions!

If you have ever wondered how all those fuel nozzles at your gas station actually work…

Gas Station Fuel Nozzles are Fascinating Contraptions

…then you have come to the right place.

It’s a simple, yet complex, arrangement of mechanical components—linkages, valves, springs, diaphragms, seals—that work together to make these fascinating contraptions function.

Please explain…

How Gas Station Nozzles Work?

Let’s have a quick review of couple of concepts that we established in our physics classes, the understanding of which would be required to fully grasp the mechanics behind the functioning of a gas station nozzle.

  • We know that a fluid flows from a high-pressure area to a low-pressure area.
  • We know that the pressure in vacuum is less than the atmospheric pressure.

Now that we have reviewed the essential concepts, we can press the lever on the fuel nozzle to see how the whole thing works.

As you press the lever, it opens the main poppet valve

This poppet valve allows the gasoline to flow through the body of the fuel nozzle. However, this flow only lasts for a short term. To continue to draw more gasoline through the nozzle, the contraption has to pull-in additional force to assist the gasoline flow.  That is where the design of the device helps itself.

The initial flow of gasoline causes an anti-drain valve to move downwards

The downward movement of the valve, creates a low-pressure area within the fuel nozzle. This low-pressure area is connected to the spout of the gas pump nozzle via a tube—the point of insertion being a small hole present at the bottom of spout. This hole is exposed to the external environment, allowing air to enter.

When the vacuum is created, the resulting pressure drop causes air to flow from the small hole, all the way through the tube and into the vacuum space. There it mixes with gasoline, and the flow of air causes gasoline to maintain its own flow.

This flow continues until the gasoline level in the fuel tank reaches a certain point

At this point, the filled gasoline covers the small hole through which the air has been entering. When the hole is covered, instead of air, gasoline starts flowing through it and all the way up to the vacuum space.

Since gasoline is denser than air, the pressure changes in the vacuum space. This pressure change causes a diaphragm to be sucked, which then shuts off the main poppet valve. Consequently, the gasoline supply from the mains is cut off.

And this is how the fuel nozzles at your gas station works.

Want to Buy a New Fuel Nozzle for Your Gas Station?

We stock high quality branded fuel nozzles. All our products come with manufacturer’s warranty and along with fuel nozzles, we also provide other petroleum equipment supplies for your gas station. Check out our expansive inventory of products.

‘Tis The Season To Save BIG!

2016 Christmas SpecialsBUY ONLINE – SAVE BIG!!

Not only will you save big on every day prices but enter the code FREEFRT* in the Coupon Code box on the Shipping Information page when you check out and we will ship all qualifying products for F-R-E-E!

The temperatures may be falling but the specials are HOT, HOT, HOT!!

Save big on select Service Station Essentials now through January 31, 2017 when purchased through JohnWKennedyCo.com and pay no shipping fees! And by all means, feel free to look around at all our other online offerings with ridiculous deals on overstock and closeouts up to 75% or more off on our Overstock Specials page.

 

*Free Freight applies only for those qualifying products on the Web Specials page and limited to a maximum of (1) case quantity on nozzles. If you buy qualifying and non-qualifying products on the same order, we will remove freight charges for all qualifying products to reduce your overall freight charge but you MUST enter the coupon code FREEFRT. The shipping charges you see for any qualifying products when you check out online will be reduced/removed when we receive your order confirmation prior to the finalized billing of your credit card / PayPal account and prior to your order being physically shipped so what you see online for shipping charge WILL be reduced/removed!
We reserve the right to limit quantities.

REMEMBER, you MUST enter the coupon code: FREEFRT when checking out on the Shipping information page to take advantage of the free freight offer.

 

Feel free to contact us at 1.800.238.1225 with any questions about this offer.

The John W. Kennedy Company appreciates your business and continued support!
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OPW Non UL Farm Nozzles – Hold Open Racks

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After numerous complaints about  no racks on Farm nozzles,  OPW has elected to offer  the following nozzles with hold open racks and without the UL 2586 approval.

These farm nozzles can be used in applications that don’t require a 3rd party approval and don’t require UL2586 approval.

OPWFarmNozOPWFarmNoz_2

Feel free to contact us at 1.800.451.4021 with any questions or to place your order today!


We appreciate your business and thank you for your continued support!

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